title: Critical review on recent developments in solventless techniques for extraction of analytes.
abstract: The most recent contributions on solventless extraction techniques have been reviewed. This paper deals with those techniques that use solid phases, such as solid-phase microextraction, liquid phases, such as single-drop microextraction and hollow-fibre liquid-phase microextraction, and subcritical fluids, such as subcritical water extraction. In all cases, the most recent publications have been critically studied. Direct extraction and derivatization processes to facilitate the extraction of analytes in different areas have been included. Hyphenated approaches, if available, are also included in this review. Comparison of techniques organized by analytes and matrices also enhances this critical overview of solventless techniques.
authors.affiliation: Department of Analytical Chemistry, Aragon Institute of Engineering Research I3A, CPS-University of Zaragoza, Torres Quevedo Building, María de Luna St. 3, 50018, Zaragoza, Spain. cnerin@unizar.es
authors.forename: C
authors.initials: C
authors.lastname: Nerín
authors.forename: J
authors.initials: J
authors.lastname: Salafranca
authors.forename: M
authors.initials: M
authors.lastname: Aznar
authors.forename: R
authors.initials: R
authors.lastname: Batlle
mesh_terms: D053000:Analytic Sample Preparation Methods / Q000295:instrumentation / Q000379:methods*; D005591:Chemical Fractionation / Q000295:instrumentation / Q000379:methods*; D005782:Gels / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D013499:Surface Properties
chemical_list: D005782:Gels; D011108:Polymers